SN74ALS1240

OCTAL BUFFER AND LINE DRIVER

WITH 3STATE OUTPUTS

SDAS054B − DECEMBER 1982 − REVISED JANUARY 1995

3

POST OFFICE BOX 655303

POST OFFICE BOX 1443

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

R2 = 500

TA = MIN to MAX†

UNIT

MIN

MAX

tPLH

A

Y

2

13

ns

tPHL

A

Y

2

13

ns

tPZH

OE

Y

4

20

ns

tPZL

OE

Y

6

22

ns

tPHZ

OE

Y

2

10

ns

tPLZ

OE

Y

3

13

ns

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.